Lubricator for steam-engines



(No ModeL) 2 Sheets-Sheet 1.4 J. W. CLOUD 8v S. PORCHER. LUBRICATOE FORSTEAM ENGINES 888811888 Ang. 18, 1885.

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LUBRIGATOR POR STEAM ENGINES.

Patented Aug. 18, 1885.

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UNITED STATES JOHN w. OLOUD AND sAMUEL POEOHEE, OE ALTOONA,PENNSYLVANIA.

PATENT CEEICE.

vLUBRICATOR FOR STEAM-ENGINES.

SPECIFICATION forming part of Letters Patent No. 324,362, dated August18, 1885.

Application filed July 9, 1885. (No model.)

.To a/ZZ whom it may concern.'

ABe it known that we, JOHN W. CLOUD and SAMUEL POROHEE, both of Altoona,inthe county of Blair and State of Pennsylvania, have invented certainnew and useful Improvements in Lubricators for Steam-Engines, of whichthe following is a specification.

Our invention relates, mainly, to that ,class of visible-feed lubricatorwhich has but one connection with the steam space or passage, and thatat the base or lower part of the lubricator.

The invention principally consists in forming the casting of which thebody of. the lusage open at Vboth ends and extending from the lowestpoint of the lubricator to a point inside of the condensing-chamber,which surmounts the oil-space, the arrangement being such that thiscored passage thus formed in the casting serves both to supply the steamneeded for condensing purposes. and also to conduct the lubricantdownward from the top of the sight-feed glass or chamber on its Way tothe valves and cylinders to be lubricated. In addition to the usualcondenser, we make use of an auxiliary condenser located above and indirect communication with the sightfeed chamber, and the cored passagefirst above referred to serves to supply steam to both of saidcondensers.

Theforegoing and other features of our invention can best be explainedand understood by reference to the accompanying drawings, in which-Figure I is a vertical central section of a lubricator embodying ourimprovements. The plane of section is partly on line A B, Fig. II,

. and partly on line G D, Fig. II. That portion above the line E Fis online A B, and that portion below line E F is on line C D. Fig. Il is aView of the lubricator, partly in plan and partly in horizontal section.Fig. III is a vertical central section of a modication which will behereinafter described.

The body of the lubricator is a single casting, in which Vare formed theoil-chamber x, the condensing-chamber 1 above the oil-chamber, and thecored passage a, open at both ends and extending from the threaded stemx below (which stem screws into the part to which the lubricator is tobe attached) to near the top of the condensing-chamber y above. Thewalls of that portion of the passage within the condensing-chamber areformed in part by the walls' of said chamber itself, as indicated in thedrawings. That portion of the passage within the oil-chamber has itswalls formed with an enlargement in which is bored the passage e,through which water from the condensing-chamber is supplied to theoilchamber. This passage e, after being bored, has its upper end pluggedtight, as indicated at e. The condensed water is conducted to passage ethrough a duct, e2, controlled by a valve, f, in the usual way. brlcatoris composed wltha single cored pasrIhe transparent si ght-feed chamberis shown at h, held in place by stuffing-boxes h h', as usual. The oilenters the lower end of the sight-feed chamber through passage i(controlled by valve y) and nozzle i. The upper stuffing box h screwsonto a coupling, j, which is attached to the exterior of the condensingchamber c, and is formed with a branch passage, s, communicating withthe interior of the passage a, said passage sserving as an outlet forthe oil from the sight-feed 'chamber and also as a conduit for steaminto the sight-feed chamber. The sight-feed chamber h is thus broughtinto direct communication with the passage a, with the effect ofsecuring equality of pressure in the two chambers c and h. Screwed tothe top of the coupling j is the tube d, closed at its upper end. Thistube formsa chamber,whichis above the level of the passage s, and isthus wholly available as a condenser` to supply the transparent .tubewith clear water continuously. Under this arrangement it will be notedthat the passage a serves the treble purpose of supplying steam bothtothe usual condenserand also to an auxiliary condenser and ofconducting the lubricant from the top of the sight-feed cham@ berdownward through the lubricator on its way to the parts to belubricated.

The top of the condenser c is closed by a screw-cap, t, provided with acentral downwardly-projecting tubular extension. r, into which screwsthe stem n of a cup, k. The stem n has formed in it a passage, u,leading from the bottom of the cup, and terminating in one or morelateral openings, 0,which communicate with an internal enlargement, r',of `the tubular extension of'. The lower end of the stem has a conicalform, and is adapted to iit upon a conical seat formed for it in thelower end of the tubular extension r. By reason of lugs or handles m thecup can be screwed up and down, and it can thus be used for iilling thecondenser with water in case that be needed or for supplying lubricant(through the condensing-chamber and passage a) to the valves andcylinders in case the glass tube hy should break or the lubricatorshould be otherwise disabled.

To provide for cases where it is desired to feed the lubricant to theparts to be lubricated by a passage or pipeindepeudent of that whichsupplies the steam, the arrangement illustrated in Fig. may be employed.Thelubricator in this ligure is similar to the one illustrated in Figs.1 and 2, and we therefore. represent only the lower and upper ends ofit. In this arrangement the globe-valve G into which the lubricator isscrewed is formed with two separate and distinct passages, c w, whichhave no communication with one another. Passage c communicates abovewith passage a of thelubricator and below with the pipe which carriesoff the lubricant to the parts to be lubri cated. The crosspassage w, atits outer end, leads into the part P, which opens into the steam pipe orboiler, and at its inner end it is provided with avertical opening underthe lower end of passage c. Into this vertical opening is screwed apipe, (of smaller diameter than passage (1.,) H, which extends centrallyup through said passage a to a point above the top of the latter. Thussteam is supplied to the condenser through the inner pipe, H, while thelubricant is conducted away through the outer concentric passage, a.

The stealnpassage w in the globe-valve is controlled by a valve, w. Theoil-passage 'v may be controlled in asimilar way, if desired. XVe preferto arrange the sight-feed glass above the oil-reservoir and to place thecondenser c eceentrically to the passage a, with aview to simplifyingthe construction of the lubricator; but we do not confine ourselves tothese arrangements.

lVhat we claim as new and of our own ir.- vention isl.Asightleedlubricatorforsteam-engines, provided with means for attachmentat its base only, a main condenser, and an auxiliary condenser above andcommunicating with the sight-feed glass, in combination with a singlepassage extending from said base upward, both for supplying steam to thetwo condensers and for conducting the lubricant downward, substantiallyas and for the purposes hereinbefore set forth.

2. The combination of the oil-reservoir, the main condenser, thesight-feed glass and its connections, the auxiliary condenser above the'outlet of the sight-feed glass, and the pas sage a, extending from thebase of the lubri cater up into the main condenser and communicatingdirectly with both condensers, substantially as and for the purposeshereinbefore Set forth.

3. The combination of the globe-valve provided with independent andseparate passages, one for oil and steam and one for steam only, thelubricator provided with the passage a, communicating only with theoil-passage of the globe-valve, and a pipe communicating with thesteam-passage of the globe-valve and extending up through the passage a,substantiall y as and for the purposes hereinbefore set forth.

4.. Asight-feedlubricatorforsteam-engincs, provided with means forattachment at its base only, and having an upwardlyextending passage, a,in combination with the screw-cup 7c, applied to the top of thecondenser, and constructed and arranged, substantially as described, sothat it may be used at will as a seal to the condensing-chamber or as ameans by which lubricant can be supplied through the condenser andpassagea in case the sight-fccd should become disabled, substantially ashereinbefore set forth.

5. In a sight-feed lubrieator, the combination,with the oil-cup, themain condenser, and the sight-feed chamber, of an auxiliary condenser,d, arranged above the outlet-passage of said chamber so as to be whollyavailable as a condenser, and adapted to continuously supply thesight-feed chamber with clear water, substantially as hereinbefore setforth.

In testimony whereof we have hereunto set our hands.

JNO. W. CLOUD. SAMUEL PORGHER.

VitIiesses:

EDMUNnl?. LORD, E. J. CAssinY.

